Filipe Cabaço on Vitro

Filipe Cabaço, team lead on Realtime at Supabase, returns after two years to talk about his side projects: Vitro, a browser for every AI agent with a replayable timeline of what each one did, and Ampoule, which packs an Elixir release into one file by compiling the BEAM to WebAssembly. We also get into MCP, persona testing with agents, token costs, why launching is the scary part, AI and security, and what learning and hiring look like now that agents write the code.00:00 - Introduction02:35 - Welcome back and ElixirConf in Chicago05:31 - Vitro: observability for browser agents11:01 - Persona testing with agents13:56 - Why MCP is the right interface16:59 - Compute off your laptop, subsidies ending22:30 - Three AM agents and attention24:06 - Token costs and picking models27:47 - Side projects: doodle discs and a patio defender33:31 - Reverse engineering bad apps with agents37:14 - AI, hiring, and skipping university47:07 - iHub and entrepreneur networks49:32 - Afraid to launch your side projects51:28 - Open source and self hosting54:14 - Security and vibe coded leaks57:49 - MCP auth should be SSO59:34 - How Vitro is built: Elixir and Firecracker1:02:48 - Market the result, not the features1:05:51 - Tool sprawl and agent subscriptions1:10:53 - A local AI gateway1:14:40 - Home servers and bare metal1:17:42 - Ampoule: Elixir anywhere via WebAssembly1:22:48 - An Elixir mesh network on phones1:27:32 - Cold email and deliverability1:34:11 - Naming agents after Star Trek1:36:39 - Why every agent needs its own browser1:42:10 - Cloudflare's MCP and too many tools1:44:21 - Peter Ullrich and funding the Erlang FoundationResources Mentioned:- Vitro: https://vitro.run/?utm_source=elixir-mentor- Ampoule: https://filipecabaco.github.io/ampoule/?utm_source=elixir-mentor- ex_tauri: https://github.com/filipecabaco/ex_tauri?utm_source=elixir-mentor- Burrito: https://github.com/burrito-elixir/burrito?utm_source=elixir-mentor- KinSwitch: https://kinswitch.app/?utm_source=elixir-mentorConnect with Filipe:- X: https://x.com/filipecabaco?utm_source=elixir-mentor- GitHub: https://github.com/filipecabaco?utm_source=elixir-mentor- LinkedIn: (fill in)SUPPORT ELIXIR MENTOR- Elixir Mentor: https://elixirmentor.com/?utm_source=elixir-mentor#ElixirLang #MyElixirStatus #ElixirMentor